java.lang.NullPointerException: null at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936) at com.netflix.eureka.InstanceRegistry.register(InstanceRegistry.java:164) at com.netflix.eureka.PeerAwareInstanceRegistry.register(PeerAwareInstanceRegistry.java:466) at com.netflix.eureka.PeerAwareInstanceRegistry$$FastClassBySpringCGLIB$$336b8c82.invoke()